sought complete isolation and who died without explaining his actions. >> pelley: bob, thank you very much. oscar pistorius, the olympic runner who shot his girlfriend to death, claims it wasn't murder. in a bail hearing today, pistorius said he couldn't even understand why he had been charged. pistorius is famous for running on prosthetic blades-- he lost both legs as a child. emma hurd is following the case for us in pretoria, south africa. >> reporter: oscar pistorius told the court he was deeply in love with his girlfriend and never intended to kill her, his words read out by his lawyer. his family sobbed in the packed courtroom, and pistorius, one of the world's most famous athletes, broke down in tears. according to an affidavit, pistorius said he had woken in the night, convinced there was an intruder in the bathroom. he grabbed his gun and fired through the bathroom door, thinking that reeva steenkamp was in their bed. when he realized she wasn't, he said it filled him with horror and fear.